2798078 has 4 divisors (see below), whose sum is σ = 4197120. Its totient is φ = 1399038.

The previous prime is 2798069. The next prime is 2798083. The reversal of 2798078 is 8708972.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699518 + ... + 699521.

It is an arithmetic number, because the mean of its divisors is an integer number (1049280).

2^2798078 is an apocalyptic number.

2798078 is a deficient number, since it is larger than the sum of its proper divisors (1399042).

2798078 is a wasteful number, since it uses less digits than its factorization.

2798078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399041.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 2798078 is about 1672.7456471323. The cubic root of 2798078 is about 140.9137174781.

The spelling of 2798078 in words is "two million, seven hundred ninety-eight thousand, seventy-eight".